JC virus seroprevalence and seroconversion in multiple sclerosis cohort: A Middle-Eastern study

JCV seroprevalence among MS patients in the Middle East was lower than international figures. Male gender, age at onset and disease duration were significantly associated with JCV seropositivity. Risk of JCV seroconversion was higher than previously reported figures. Observed JCV sero-reversion or pseudo-conversion entail watchful period before embarking on a clinical decision.